<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <script src="/js/vue.js"></script>
  <title>demo</title>
</head>
<body>
  <div id="app">
    <p v-html="msg"></p>
  </div> 
</body>
<script>
    let app = new Vue({
        el:"#app",
        data:{ 
            msg:'<h1>Hello China!</h1>'
        }
    })
</script>
</html>